DEPARTING THE GATE AT OAK; A B737 CREW IS INSTRUCTED TO HOLD SHORT OF TXWY U. WHILE HOLDING; THE CREW DISCOVERS THEY ARE STILL ON CLRNC DELIVERY FREQ.

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WE WERE LATE BY 30 MINS ARRIVING INTO OAKLAND. I HAD TO COORD WITH DISPATCH AND THE REFUELER FOR EXTRA FUEL PLUS A PLANNED DIVERT ON THE RELEASE DUE TO A TEMPORARY DUST STORM IN PHOENIX. A NORMAL PUSHBACK AND CLRNC WAS PERFORMED FROM GATE EXCEPT THAT I MISSED THE FREQ BEING USED FOR THE CLRNC TO PUSH BACK WHICH WAS INITIATED ON CLRNC DELIVERY (121.1) INSTEAD OF THE NORMAL GND CTL FREQ AT OAKLAND. GND CTL WAS BROADCASTING ON BOTH FREQS. NORMAL CHKLISTS WERE ACCOMPLISHED AND WE DIDN'T FEEL RUSHED AND WERE NOT RUSHING OUR FLOWS IN ORDER TO MAKE UP ANY DELAYS. TAXI INSTRUCTIONS WERE TO TAXI VIA TXWY T AND HOLD SHORT OF TXWY U FOR RWY 29. WE BOTH READ BACK THE TAXI INSTRUCTIONS. I 'CLRED L' AND THE FO 'CLRED R.' INSTEAD OF HOLDING SHORT OF TXWY U; I MADE THE INITIAL TURN AND STOPPED IMMEDIATELY WHEN I SAW THAT I WAS ON TXWY U. COMPANY WAS NOW COMING INTO VIEW AT 2 O'CLOCK POS ON TXWY W AND HELD FOR US. WE PRUDENTLY APOLOGIZED WITH GND ON 121.1 AND THEY STATED WE WERE STILL UP ON THE CLRNC DELIVERY FREQ. UPON SWITCHING TO THE CORRECT GND FREQ; A NORMAL TAXI AND TKOF WAS MADE ON RWY 29. I FEEL THAT MY MIND SET WHEN GIVEN THE 2 LETTER TAXI INSTRUCTIONS WAS THAT THE FIRST TXWY WHEN I TURNED R WAS TXWY T; AND NOT TXWY U. ALTHOUGH IT WAS A JUDGEMENT ERROR ON MY PART; I ALSO FEEL THAT NOT BEING UP ON THE CORRECT GND CTL FREQ WOULD HAVE GIVEN THE CREW A BETTER SITUATIONAL AWARENESS OF THE INCOMING COMPANY FLT. EVEN WITH HAVING THE ARPT DIAGRAM OUT IN PLAIN VIEW ON THE CTL WHEEL; MONITORING COM #2; I SHOULD HAVE DOUBLECHKED IT WHEN GIVEN ANY TYPE OF HOLD SHORT TAXI INSTRUCTIONS. WHEN I DEBRIEFED THE PROB WITH MY FO; WE BOTH FELT THAT MAYBE A SIMPLE CALL FROM GND CTL COULD HAVE BEEN 'FLT NUMBER; HOLD YOUR POS; COMPANY INBOUND' UPON INITIAL CHK-IN. ALTHOUGH ZOA IS VERY PROFESSIONAL IN THEIR DUTIES; I WOULD RECOMMEND THAT THEY WOULD NOT SIMULTANEOUSLY BROADCAST ON BOTH CLRNC DELIVERY AND GND CTL USING SEPARATE FREQS. THAT WAY THE CREWS WOULD IMMEDIATELY KNOW IF THEY ARE ON THE CORRECT FREQ; CAN MONITOR ANY INBOUND FLTS; AND INCREASE THEIR AWARENESS. IN THE FUTURE WHEN CLRING OFF THE TUG CREW; I MUST BE OBSERVANT OF THE CORRECT FREQ BEING UTILIZED; DOUBLECHK THE ARPT DIAGRAM (EVEN AT NIGHT); VERIFY THE TAXI CLRNC AGAIN WITH MY FO; AND HAVE BETTER SITUATIONAL AWARENESS OF THE TAXI FLOW TO THE RWY.